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以郑州某换乘车站为例,阐述风系统设计中的公共区负荷计算、空气处理焓湿图、设备选型及系统运行模式,水系统设计的原理等。对空气-水系统和全空气系统的能耗进行对比和分析,得出公共区通风空调系统无论采用空气-水系统,还是全空气系统,冷冻水系统都没有受到影响,但空气-水系统的总耗电量约为全空气系统的89%,大大减少了输送能耗,节能效果显著。对空气-水系统和全空气系统的技术经济进行对比,得出空气-水系统能有效减少地下车站机房和风道面积,压缩土建规模,并能降低运行能耗,从而大幅度降低车站规模和造价;但空气-水系统对于运行时间较长的地下车站来说,其末端设备多且分散,运行维护工作量大,检修较为困难,因此对于土建规模受限的车站来说,空气-水系统是一个较好的选择。
Taking a transfer station in Zhengzhou as an example, the load calculation of common area, the psychrometric chart of air handling, equipment selection, system operation mode and principle of water system design are described. Comparing and analyzing the energy consumption of the air-water system and the whole air system, it is concluded that the air-conditioning system in the common area is not affected by the air-water system or the whole air system, but the chilled water system is not affected, The total power consumption is about 89% of the total air system, greatly reducing the transmission energy consumption, energy-saving effect is significant. Comparing the technical economics of air-water system with those of the whole air system, we conclude that the air-water system can effectively reduce the area of engine room and air duct of underground station, compress the civil construction scale and reduce the energy consumption of operation, so as to greatly reduce the station scale and cost However, the air-water system is more and more dispersed at the end of a long-running underground station, and has a large operation and maintenance workload. Therefore, the maintenance of the air-water system is difficult. Therefore, for a station with a limited scale of construction, the air-water system is A better choice.